Fragment
public class VideoOneFragment extends Fragment implements View.OnClickListener { private View view; private Button mBut1; private Button mBut2; private Button mBut3; //interface CallBackValue callBackValue; /** * The association between fragment and activity is to call back this method */ @Override public void onAttach(Context context) { // TODO Auto-generated method stub super.onAttach(context ); //The current fragment rewrites the callback interface from the activity to get the instantiated object of the interface callBackValue =(CallBackValue) getActivity(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View inflate = inflater.inflate(R.layout.fragment_video_one, container, false); initView(inflate); return inflate; } private void initView(View inflate) { mBut1 = (Button) inflate.findViewById(R.id.but1); mBut1.setOnClickListener(this); mBut2 = (Button) inflate.findViewById(R.id.but2); mBut2.setOnClickListener(this); mBut3 = (Button) inflate.findViewById(R.id.but3); mBut3.setOnClickListener(this); callBackValue.SendMessageValue("0"); } @Override public void onClick(View v) { switch (v.getId()) { default: break; case R.id.but1: callBackValue.SendMessageValue("1"); break; case R.id.but2: callBackValue.SendMessageValue("2"); break; case R.id.but3: callBackValue.SendMessageValue("3"); break; } } //Define a callback interface public interface CallBackValue{ public void SendMessageValue(String strValue); } }
in Activity
@Override public void SendMessageValue(String strValue) { tv.setText(strValue); }